Fishing Hip Flask. Another great selection of British made Pewter Flasks with sports motifs. The flasks are available in 4 oz ( 114 ml) and 6 oz ( 170.4 ml). This particular flask has a fishing scene embossed on the front. The Fishing Hip Flask is finished to a very high standard of British workmanship. The sports flasks all have a screw cap. Each Fishing hip flask is gift boxed and will be in a satin drawstring gift bag for protection. The flask can be engraving with your logo, name or personal message.